﻿/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2009 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * The Data Processor is responsible for transforming the input and output data
 * in the editor. For more info:
 * http://dev.fckeditor.net/wiki/Components/DataProcessor
 *
 * The default implementation offers the base XHTML compatibility features of
 * FCKeditor. Further Data Processors may be implemented for other purposes.
 *
 */

var FCKDataProcessor = function()
{}

FCKDataProcessor.prototype =
{
    /*
     * Returns a string representing the HTML format of "data". The returned
     * value will be loaded in the editor.
     * The HTML must be from <html> to </html>, including <head>, <body> and
     * eventually the DOCTYPE.
     * Note: HTML comments may already be part of the data because of the
     * pre-processing made with ProtectedSource.
     *     @param {String} data The data to be converted in the
     *            DataProcessor specific format.
     */
    ConvertToHtml : function( data )
    {
        // The default data processor must handle two different cases depending
        // on the FullPage setting. Custom Data Processors will not be
        // compatible with FullPage, much probably.
        if ( FCKConfig.FullPage )
        {
            // Save the DOCTYPE.
            FCK.DocTypeDeclaration = data.match( FCKRegexLib.DocTypeTag ) ;

            // Check if the <body> tag is available.
            if ( !FCKRegexLib.HasBodyTag.test( data ) )
                data = '<body>' + data + '</body>' ;

            // Check if the <html> tag is available.
            if ( !FCKRegexLib.HtmlOpener.test( data ) )
                data = '<html dir="' + FCKConfig.ContentLangDirection + '">' + data + '</html>' ;

            // Check if the <head> tag is available.
            if ( !FCKRegexLib.HeadOpener.test( data ) )
                data = data.replace( FCKRegexLib.HtmlOpener, '$&<head><title></title></head>' ) ;

            return data ;
        }
        else
        {
            var html =
                FCKConfig.DocType +
                '<html dir="' + FCKConfig.ContentLangDirection + '"' ;

            // On IE, if you are using a DOCTYPE different of HTML 4 (like
            // XHTML), you must force the vertical scroll to show, otherwise
            // the horizontal one may appear when the page needs vertical scrolling.
            // TODO : Check it with IE7 and make it IE6- if it is the case.
            if ( FCKBrowserInfo.IsIE && FCKConfig.DocType.length > 0 && !FCKRegexLib.Html4DocType.test( FCKConfig.DocType ) )
                html += ' style="overflow-y: scroll"' ;

            html += '><head><title></title></head>' +
                '<body' + FCKConfig.GetBodyAttributes() + '>' +
                data +
                '</body></html>' ;

            return html ;
        }
    },

    /*
     * Converts a DOM (sub-)tree to a string in the data format.
     *     @param {Object} rootNode The node that contains the DOM tree to be
     *            converted to the data format.
     *     @param {Boolean} excludeRoot Indicates that the root node must not
     *            be included in the conversion, only its children.
     *     @param {Boolean} format Indicates that the data must be formatted
     *            for human reading. Not all Data Processors may provide it.
     */
    ConvertToDataFormat : function( rootNode, excludeRoot, ignoreIfEmptyParagraph, format )
    {
        var data = FCKXHtml.GetXHTML( rootNode, !excludeRoot, format ) ;

        if ( ignoreIfEmptyParagraph && FCKRegexLib.EmptyOutParagraph.test( data ) )
            return '' ;

        return data ;
    },

    /*
     * Makes any necessary changes to a piece of HTML for insertion in the
     * editor selection position.
     *     @param {String} html The HTML to be fixed.
     */
    FixHtml : function( html )
    {
        return html ;
    }
} ;
